What does StackOptic analyze?

StackOptic runs 18 analysis modules on any public website from a single URL. It detects 7,000+ technologies (CMS, frameworks, analytics, payments, CDN, hosting), evaluates SSL certificates and HTTP security headers with grades from A+ to F, measures Core Web Vitals (LCP, CLS, TBT, FCP), audits SEO meta tags and structured data, checks email security (SPF, DKIM, DMARC), analyzes AI & LLM readiness including bot access and llms.txt validation, extracts color palettes and typography, estimates carbon footprint, and generates permanent shareable reports.

Does it work on sites behind Cloudflare or bot protection?

Yes. StackOptic uses a real browser engine that loads pages exactly like a human visitor — executing JavaScript, rendering CSS, and handling redirects. This allows it to bypass Cloudflare, LiteSpeed, Sucuri, and other bot protection systems where traditional crawlers and HTTP-only tools fail.

What do I get on the free plan?

The free plan includes 5 analyses per day with access to all 18 modules, full scores, technology detection, and security grades. Every report is permanently accessible via a unique shareable URL — no login required to view. No credit card needed. AI-powered insights, re-analysis, PDF/JSON export, and comparison features are available on Pro ($24/mo) and Agency ($99/mo) plans.

What is AI & LLM readiness analysis?

This module evaluates how visible and citable your website is to AI search engines like ChatGPT, Perplexity, Google AI Overviews, and Claude. It audits access permissions for 8 major AI bots, validates llms.txt and llms-full.txt files, scores citation-ready content structure, and analyzes structured data (JSON-LD) for GEO readiness — helping you rank in the next generation of search.

How long does an analysis take?

Most analyses complete in under 10 seconds. StackOptic runs all 18 modules in parallel using a real browser session, so you get technology detection, security audit, performance metrics, SEO analysis, and AI readiness scoring simultaneously.

How accurate are the results?

Detection is based on real browser execution — DOM inspection, JavaScript runtime analysis, HTTP headers, and DNS records. With 7,000+ technology signatures and Lighthouse-calibrated performance scoring, StackOptic achieves high accuracy for mainstream technologies.

What security checks are performed?

The security module evaluates SSL/TLS certificates, 12+ HTTP security headers (HSTS, CSP, X-Frame-Options, Permissions-Policy, Referrer-Policy), HTTPS enforcement, and email authentication (SPF, DKIM, DMARC). Each site receives a letter grade from A+ to F with specific remediation steps.

Do you store the websites I analyze?

StackOptic only stores publicly available information that any visitor to a website would see — HTML content, HTTP headers, DNS records, and screenshots. We do not access private data, log in to websites, or perform any intrusive testing.

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1stdibs.com

https://1stdibs.com· First analyzed 17 Feb 2026· Updated 17 Feb 2026

Export

1stdibs.com

Sponsored

Hosting Provider

Fastly, Inc.

IP Address

151.101.1.205

Server Location

🇨🇦 Montreal, Canada

ASN

AS54113

Organization

Fastly, Inc.

Nameservers

ns-1849.awsdns-39.co.uk.ns-1003.awsdns-61.net.ns-125.awsdns-15.com.ns-1306.awsdns-35.org.

Performance

Page Speed

1 KB

43 requests

Image Optimization

Responsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

Fastly, Inc.

Technology Stack

7 Technologies Detected

Fonts

Adobe Fonts (Typekit)Adobe Fonts

CSS Frameworks

Analytics

Tag Managers

Customer Support

Security

SEO Analysis

C61/100

1stdibs.com1stdibs.com

1stDibs: Antique and Modern Furniture, Jewelry, Fashion & Art

The most beautiful things on earth. Shop antique furniture, fine jewelry, vintage fashion and art from top sellers around the world. Global shipping available.

Title Length61 chars

Recommended: 50-60 chars

Description Length159 chars

Recommended: 120-160 chars

Issues (1)

• Missing H1 tag - every page should have one H1

5 issues found

Upgrade to view details

Crawlability

Sitemap

robots.txt

218 rules

Allows all crawlers

Sponsored

Security Score

71%Good

Interactive

HTTPS

No WAF

101d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Sectigo Limited

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

29.05.2025

Valid Until

29.05.2026

OCSP Stapling

Enabled

Subject Alternative Names (3)

1stdibs.com*.1stdibs.com*.1stdibscdn.com

SHA-256 Fingerprint

5F:43:24:F1:A1:EF:B1:BA:19:75:B3:F4:F3:71:1E:CB:58:2B:10:B6...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

accept-ranges

none

age

5530

cache-control

🔴 No Cache(no-cache, no-store, must-revalidate, max-age=0)

content-encoding

📦 Gzip(gzip)

content-security-policy

frame-ancestors https://*.1stdibs.com;

content-type

text/html; charset=utf-8

Good Warning Issue

Email Infrastructure

Google Workspace

Score

SPF

DKIM

DMARC

DMARC Policy

None (Monitor Only)

MX Records (5)

aspmx2.googlemail.com

aspmx.l.google.com

alt1.aspmx.l.google.com

alt2.aspmx.l.google.com

+1 more

Domain Information

1stdibs.com

Domain Age

27y 3m

Created

08.11.1998

Expires

07.11.2026

Last Updated

28.01.2026

Registrar

GoDaddy Corporate Domains, LLC

DNSSEC

Not Enabled

Privacy & Compliance

OneTrust

Cookie Consent Banner

OneTrust

GDPR Indicators

Cookie consent banner detected

CMP: OneTrust

Data Protection Officer mentioned

Typography & Readability

Georgia + Helvetica Neue

63/100

Readability

/30

32/40

14px · LH 1.50

Hierarchy

/20

8/25

WCAG

/25

15/15

Contrast: undefined

Performance

/25

13/20

2 fonts

Heading Font

Georgia

Serif

Body Font

Helvetica Neue

Sans14px

Contrast Ratio

Reading Comfort

Serif Headlines + Sans Body

left aligned

24px

⚠️ Small text: 14px may be hard to read on mobile. Consider 16px+.

✅ Optimal line spacing: 1.50 ratio ensures comfortable reading.

✅ Good performance: Using 2 font families keeps load times fast.

⚠️ Cramped layout: 11 elements lack adequate spacing.

✅ Clean layout: Consistent left alignment throughout.

AAdobe Fonts Buy on MyFonts

Business & Marketing Stack

3 Tools Detected

Advanced

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Privacy & Cookies

OneTrustEnterprise

Cookie consent and privacy compliance tools

Sponsored

Scripts & Styles

26 Resources

Scripts

Styles

Async

Defer

Top Script Sources

a.1stdibscdn.com(15)googletagmanager.com(4)cdn.cookielaw.org(1)

Website Identity

1stdibs.com

27 years old

GoDaddy Corporate Domains, LLC📧 Google Workspace

Sponsored

Last analyzed: 17 Feb 2026 at 07:35

Historical Analysis & Change Tracking